HTC 650 E Classic User manual

Contact Information
HTC Sweden AB
Box 69
SE-614 22 Söderköping - Sweden
Tel: +46 (0) 121-294 00
Fax: +46 (0) 121-152 12
You can find addresses for our retailers and service partners on our website:
www.htc-floorsystems.com
Always specify the model and serial number when asking questions about your product.
Trademarks
HTC is a trademark owned by HTC Sweden AB. Other names and products mentioned
in this manual may be registered trademarks owned by the relevant companies.
© 2013 HTC Sweden AB. All rights reserved.

EC Declaration of conformity
Manufacturer: HTC Sweden AB
Box 69
SE-614 22 Söderköping
Type of equipment: Grinding Machine
Make: HTC
Trademark: HTC 650 Classic E
Year of manufacture: See machine name plate
Serial number: See machine name plate
As the manufacturer, we hereby declare under our sole responsibility that the above
product with serial numbers from 2004 and onward conforms to the applicable
regulations in directives MD 2006/42/EC, EMC 2004/108/EC as well as LVD
2006/95/EC. The following standards have been used as a basis: ISO 5349-1:2001, ISO
5349-2:2001, ISO 20643:2005, ISO 3741.
The product was CE marked in 2006. The technical documentation is available from the
manufacturer.
Original of the EC declaration of conformity (Swedish). Other languages are
translations of the original of the EC declaration of conformity.
Söderköping 01.01.10
Peter Lundgren
Development Manager
HTC Sweden AB
Kåre Kilgren
Product Manager
HTC Sweden AB


HTC 650 E Classic Table of contents
i
1 Introduction 1
1.1 General ............................................................................ 1
1.2 Liability ............................................................................ 1
1.3 Manual ............................................................................. 1
1.3.1 Safety explanations - explanation of symbols .... 1
1.4 Transportation ................................................................. 2
1.5 On delivery ...................................................................... 2
1.6 Unpacking the equipment ................................................ 3
1.7 Machine name plate ........................................................ 3
1.8 Handling and storage ...................................................... 4
1.9 Vibration and noise .......................................................... 4
1.9.1 Hand and arm vibrations .................................... 4
1.9.2 Sound power level .............................................. 4
2 Safety 5
2.1 General ............................................................................ 5
2.2 Warnings ......................................................................... 5
2.3 Notes ............................................................................... 6
3 Machine description 8
3.1 General machine description ........................................... 8
3.2 Description of controls - Control panel ............................ 10
4 Operation 12
4.1 General ............................................................................ 12
4.2 Handle setting ................................................................. 13
4.3 Handling weights ............................................................. 13
4.4 Access to grinding tools .................................................. 15
4.5 Fitting and replacing grinding tools .................................. 15
4.5.1 Fitting grinding tools ........................................... 16
4.5.2 Changing grinding tools ...................................... 17
4.6 Preparations for dry grinding ........................................... 18
4.7 Preparations for wet grinding .......................................... 18
4.8 Operation ......................................................................... 19
4.8.1 Standby .............................................................. 19
4.8.2 Emergency stop switch ...................................... 19
4.8.3 Starting the machine .......................................... 20
4.9 Making operation easier .................................................. 20

Table of contents HTC 650 E Classic
ii
5 Maintenance and repairs 21
5.1 General ............................................................................ 21
5.2 Cleaning .......................................................................... 21
5.3 Daily ................................................................................ 21
5.4 Every week ...................................................................... 21
5.5 Every month (or after 100 hours) .................................... 22
5.6 Repairs ............................................................................ 22
5.7 Spare parts ...................................................................... 22
6 Troubleshooting 23
6.1 General ............................................................................ 23
6.2 The machine will not start ................................................ 23
6.3 The machine vibrates or wears the tools unevenly ......... 23
6.4 The machine is grinding at an angle ............................... 23
6.5 The machine stops during operation ............................... 23
6.6 The fuse trips frequently .................................................. 24
6.7 The machine cannot cope ............................................... 24
7 Electronic error codes 25
7.1 General ............................................................................ 25
7.2 Hitachi ............................................................................. 25
7.2.1 SJ200 ................................................................. 25
7.2.2 Resetting the frequency converter ..................... 26
7.2.3 Checking the last error code .............................. 26
7.3 Omron ............................................................................. 26
7.3.1 MX2 .................................................................... 26
7.3.2 Resetting the frequency converter ..................... 27
7.3.3 Checking the last error code .............................. 27
8 Tekniska data 28
9 Environment 30
9.1 Chassis ............................................................................ 30
9.2 Grinding head .................................................................. 30
9.3 Electrical system ............................................................. 30
9.4 Recycling ......................................................................... 30
10 Warranty and CE marking 31
10.1 Warranty .......................................................................... 31
10.2 CE marking ...................................................................... 31

HTC 650 E Classic Introduction
3.0 1
1 Introduction
1.1 General
The HTC 650 Classic E is a grinder that can be used to grind, strip, clean and polish
concrete, natural stone and terrazzo floors. The machine's area of application depends
on the choice of tool.
Read the manual carefully, so you are totally familiar with the machine before you start
to use it. Contact your local retailer for further information. For contact information, see
Contact Information at the start of the manual.
1.2 Liability
Even though every effort has been made to make this manual as complete and accurate
as possible, we bear no responsibility for incorrect or missing information. HTC
reserves the right to change the descriptions contained in this manual without prior
notice.
This manual is protected by the Copyright Act and no part of it may be copied or used
in any other way without the written approval of HTC.
1.3 Manual
In addition to the general functions, this manual deals with the areas of application and
the maintenance of the grinder.
1.3.1 Safety explanations - explanation of symbols
A number of symbols are used in the manual to highlight the most important sections,
see below. It is important that you carefully read through the descriptions of the symbols
in order to avoid the risk of both material damage and personal injury. There are also
other symbols indicating practical tips. These are to help you use the machine in the
easiest and most effective way.
The following symbols are used in the document to indicate where special attention is
needed.
Warning!
This symbol means Warning! and indicates a risk of personal injury or material
damage in the event of incorrect use of the machine. If you see this symbol next
to a section of text, you must pay particular attention when reading through the
text and not carry out any operations of which you are unsure. This is for your
own and other users' safety and to avoid damage to the machine.

Introduction HTC 650 E Classic
2 3.0
Note!
This symbol means Note! and indicates a potential risk of material damage in
the event of incorrect use of the machine. If you see this symbol next to a
section of text, you must pay particular attention when reading through the text
and not carry out any operations of which you are unsure. This is to avoid
damage to the machine.
Tip!
This symbol means Tips! and implies the inclusion of tips and advice on
effective use of the machine or ways of reducing wear and tear to the machine.
If you see this symbol next to a text, you should read through the text to make
your work easier and to extend the service life of the machine.
1.4 Transportation
Always make sure that the grinder is securely anchored to its surroundings and the
grinding head is lowered against the surface. Make sure that the securing straps, or other
equipment used for anchoring during transport, are tightened over non-moving parts,
e.g. the grinder's chassis.
When lifting the grinder, lifting straps must be used. These must be attached
well-secured in the lifting eyes provided. Only use lifting straps approved for lifting
equipment.
Do not transport the grinder on sloping surfaces, e.g. loading ramps, without securing it
by the lifting eyes for example with a winch. This is a safety measure in case the grinder
starts to roll out of control. Also make sure that people (including operator) in the
vicinity are at a safe distance in order to prevent personal injury, in the event that the
grinder starts to roll out of control.
1.5 On delivery
The following items are included in the delivery. Contact your retailer if anything is
missing.
• Grinding machine
• Manual disc
• Locking key for control cabinet
• Hammer EZ system
• Splash guard

HTC 650 E Classic Introduction
3.0 3
1.6 Unpacking the equipment
Warning!
Read carefully through the safety instructions and user manual before using the
equipment.
• Check the packaging and equipment carefully on delivery for any possible
transportation damage. If there is any sign of damage, contact your retailer and
report it. Report packaging damage to the transport company as well.
• Check that the delivery matches the order. If there are any discrepancies, contact
your retailer.
• When lifting the grinder, lifting straps must be used. These must be attached
well-secured in the lifting eyes provided. Only use lifting straps approved for
lifting equipment.
1.7 Machine name plate
The machine name plate provides the following information. The model and serial
number must be specified when ordering spare parts for the machine.
Figure 1-1. Machine name plate
1. Model
2. Model number
3. Serial number
4. Year of manufacture
5. Power (kW)
6. Voltage (V)
7. Current (A)
8. Frequency (Hz)
9. Rotational speed (r.p.m.)

Introduction HTC 650 E Classic
4 3.0
10. Weight (kg)
11. Address field
1.8 Handling and storage
The equipment should be stored in a heated, dry area when not in use. Otherwise it may
be damaged by condensation and cold.
When lifting the grinder, lifting straps must be used. These must be attached
well-secured in the lifting eyes provided. Only use lifting straps approved for lifting
equipment.
1.9 Vibration and noise
Warning!
Always use hearing protection when using the machine.
1.9.1 Hand and arm vibrations
Hand and arm-weighted vibration level [m/s² for HTC 650 Classic E have been
measured using equipment approved in accordance with ISO 5349-1:2001.
Measurement uncertainty for the measuring equipment is given as +/- 2%.
The machine has been tested in accordance with ISO 5349-2:2001 and ISO 20643:2005
in order to identify the operations that contribute to the most frequent vibration
exposures. At vibration levels > 2.5 m/s², the exposure time should be limited in
accordance with the table below. For vibration levels > 5 m/s², immediate measures
must be taken by the employer to ensure that the exposure time does not exceed the
time specified in the table below.
Identified work conditions Measured values
[m/s²]
Daily permitted exposure
(number of hours)
Grinding/polishing 2,28 Unrestricted
Floor preparation (T-rex) 5,58 6,42
1.9.2 Sound power level
This machine is tested for noise in accordance with ISO 3741. For information on the
sound power level, see the table in chapter Tekniska data, page28.

HTC 650 E Classic Safety
3.0 5
2 Safety
2.1 General
This chapter contains all of the warnings and observations that should be taken into
consideration for HTC 650 Classic E.
2.2 Warnings
Warning!
The machine may only be used or repaired by personnel who have received the
appropriate theoretical and practical training and who have read this manual.
Warning!
Never use the machine in an environment where there is a risk of explosion or
fire. Familiarise yourself with the fire-protection instructions for the working
area and follow them.
Warning!
Secure the area around the machine. No unauthorised persons should be within
a 15-metre radius of the machine. If loose objects get under the grinding head,
these may be flung out and cause personal injury.
Warning!
Use safety equipment such as safety shoes, safety glasses, protective gloves,
respiratory protection and hearing protection.
Warning!
Always make sure that a dust extractor is connected to the grinder during dry
grinding to prevent, as far as possible, exposing the operator, people in the
vicinity, the grinder and other equipment to dust particles. Exposure to dust
particles can cause personal injury and also damage to physical equipment.
Warning!
Only start the machine with the grinding head lowered.
Warning!
Read through the safety instructions and the manual carefully before use.
Warning!
Always use hearing protection when using the machine.

Safety HTC 650 E Classic
6 3.0
Warning!
During grinding, the tools become very hot. Tip the machine back and allow it
to stand for a short while. Use protective gloves when removing the tools.
Warning!
Always remove the weights before changing tools, to prevent the machine from
tipping back.
Warning!
There is a risk of crush injuries when handling the weights, as these are heavy.
Therefore, the weights should always be handled with great care.
Warning!
Disconnect the electrical supply when cleaning, changing tools or repairing the
machine.
Warning!
The machine may only be used and moved on horizontal surfaces. There is a
risk of crush injuries if the machine starts to roll.
Warning!
The machine must be connected to a residual current device.
Warning!
Do not clean the machine using a high-pressure washer. Otherwise, moisture
may penetrate electrical elements and damage the machine's drive system.
Warning!
The machine may only be used when the splash guard is fitted.
Warning!
When working on an elevated surface where there is a risk of falling, the edges
of the surface must be secured. The values for the machine's thrust and load
capacity as well as the driving speed are given in the table for the machine's
technical data in the chapter "Technical Data".
2.3 Notes
Note!
The machine may only be used to grind and polish natural stone, terrazzo,
concrete, or other materials stated in this manual or that are approved by HTC.

HTC 650 E Classic Safety
3.0 7
Note!
Only original tools and spare parts from HTC may be used for the machine.
Otherwise, neither the CE marking nor the warranty will be valid.
Note!
For the CE marking to be valid, the instructions in this manual must be
followed.
Note!
The machine should be stored in a dry, warm (plus degrees) location when not
in use.
Note!
If the machine is stored in a cold area (below zero), it must be kept in a warm
area (above zero) for at least two hours before use.
Note!
When dry grinding, a suitable dust extractor should be used. For available
models of dust extractors, go to HTC's website www.htc-floorsystems.com for
more information.
Note!
The dust extractor's suction hose must be connected to the appropriate socket
on the machine. Adjust the dust extractor to match the grinder's capacity.
Note!
Do not use the emergency stop switch to stop the machine, except in
emergencies.
Note!
As long as the emergency stop switch is pressed in, the machine cannot be
started. Reset by turning the switch 45° clockwise so that it pops out again. The
machine can then be restarted.
Note!
After removing glue and wet grinding, always lift up the grinding heads so that
they do not stick to the floor and damage machine components and the floor
when restarting.
Note!
When wet grinding, the water tank must be filled with water. Only use cold
water with no chemical additives.

Machine description HTC 650 E Classic
8 3.0
3 Machine description
3.1 General machine description
HTC 650 E Classic is designed for grinding small to medium-sized spaces and has a
frequency converter, which means that the RPM and the grinding discs' direction of
rotation can be regulated using buttons on the control panel. It is used to grind, coarse
grind, prepare and polish concrete, natural stone and terrazzo floors or other materials
specified in this manual or material recommended by HTC. The machine is a perfect
choice for removing coverings and for grinding concrete floors according to the HTC
Superfloor method, which is an environmentally-friendly method for grinding and
polishing concrete floors.
The machine is constructed from a number of main components, see Figure3-1, page
9and Figure3-2, page10. It can be combined with weights for adjusting the
grinding pressure, which makes the machine perfect for those with high demands for
flexibility.
The handle can be set at several different angles, select a position that suits you best.
The grinding cover has a connection for an external suction hose used for dry grinding.
The machine can easily be equipped with a large number of tools, depending on the
material to be ground. For the different tools, see HTC's Product Catalogue under the
Grinding Guide tab.

HTC 650 E Classic Machine description
3.0 9
Figure 3-1. The front of the machine
1. Electrical connection
2. Tap for wet grinding
3. Wheels
4. Splash guard
5. Grinding cover
6. Weights
7. Motor
8. Lifting frame
9. Water tank
10. Tap for wet grinding

Machine description HTC 650 E Classic
10 3.0
Figure 3-2. The machine's rear
1. Handle lock
2. Filter
3. Control cabinet
4. Handle
5. Control panel
3.2 Description of controls - Control panel
The picture below shows the machine's control panel:

HTC 650 E Classic Machine description
3.0 11
Figure 3-3. Control panel
1. EM-STOP - Emergency stop switch: In an emergency, press the switch to cut
the power to the machine.
2. SPEED - Rotation speed: Regulates the rotational speed of the machine's
grinding discs.
3. ON/OFF - Start/stop the machine's functions: Turn the knob to "ON", to
activate the machine's functions and to prepare for starting. Turn the knob to
"OFF", to switch off the machine's functions.
4. REW/FWD - Start/stop the grinding discs' rotation and direction of rotation.
Turn the knob to "0", to stop the rotation.
5. RESET - Resetting the electronics: If the machine experiences an error, it can
be reset by pressing and holding the button in for two seconds. Any error code
is shown on the frequency converter's display inside the electrical cabinet, see
Electronic error codes, page25.
6. DUTY- Standby indicator: Indicates that the machine's functions have been
activated. Lights when the ON/OFF knob is turned to "ON".

Operation HTC 650 E Classic
12 3.0
4 Operation
4.1 General
The following section describes how to change tools and how to operate the grinding
machine. This section does not deal with the technical aspects of grinding, such as
selection of grinding tools, etc.
For choice of tool, go to HTC's website www.htc-floorsystems.com for more
information.
Warning!
The machine may only be used or repaired by personnel who have received the
appropriate theoretical and practical training and who have read this manual.
Warning!
Never use the machine in an environment where there is a risk of explosion or
fire. Familiarise yourself with and follow the relevant fire safety regulations
when using the machine.
Warning!
Secure the area around the machine. No unauthorised persons should be within
a 15-metre radius of the machine. If loose objects get under the grinding head,
these may be flung out and cause personal injury.
Warning!
Use protective equipment such as safety shoes, safety goggles, protective
gloves, mouth mask and hearing protection.
Warning!
Only start the machine with the grinding head lowered.
Warning!
The machine must only be used and moved on level surfaces. There is a risk of
crush injuries if the machine starts to roll.
Tip!
Check the minimum recommended cable area before using an extension cord.
You will find the recommended cable area under Technical Data.

HTC 650 E Classic Operation
3.0 13
4.2 Handle setting
The appropriate working height is set with the help of the adjustable handle. Release the
handle, by pulling the locking pin on the handle lock, see Figure3-2, page10. Adjust
the handle to the desired position and secure it, by inserting the locking pin again.
Figure 4-1. Handle settings
1. Forward position - used during transport, as the machine takes up
significantly less space.
2. Rear position - used for tipping the machine to make tool replacement easier.
3. Working position - the working height can be adjusted to two positions using
the machine's adjustable handle.
4.3 Handling weights
The machine can be equipped with three weights to make it easy to change the
machine's grinding pressure, seeFigure4-2, page14. When all three weights are
mounted, they provide additional grinding pressure that increases the grinding effect.
When using a tool with a high removal rate, such as T-Rex™, we recommend a low
grinding pressure.
Note!
Too high a grinding pressure combined with an incorrect grinding tool may
cause damage to both the machine and the floor.

Operation HTC 650 E Classic
14 3.0
Note!
Always dismantle the weights when you change tools, to make tipping the
machine easier.
Warning!
There is a risk of crush injuries when handling the weights, as these are heavy.
Therefore, the weights should always be handled with great care.
Figure 4-2. Handling weights
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